2016年5月30日
leetcode validate binary search tree
摘要： 题目： Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node contains 阅读全文
posted @ 2016-05-30 10:13 ElNinoT 阅读(91) 评论(0) 推荐(0) 编辑